diff --git a/README.rst b/README.rst
index 1b1238b51c..1cf1d3629c 100644
--- a/README.rst
+++ b/README.rst
@@ -111,6 +111,8 @@ Kolla-Ansible deploys containers for the following infrastructure components:
 - `RabbitMQ <https://www.rabbitmq.com/>`__ as a messaging backend for
   communication between services.
 - `Redis <https://redis.io/>`__ an in-memory data structure store.
+- `Zookeeper <https://zookeeper.apache.org/>`__ an open-source server which enables
+  highly reliable distributed coordination.
 
 Directories
 ===========